JP2021155998A - Management system of work machine - Google Patents

Abstract

To specify an operator of a work machine automatically.SOLUTION: A management system of a work machine for managing a work machine includes: a storage unit in which an association table is stored where identification information for specifying an operator and an operation feature pattern showing the feature of the operation are associated; and a specification unit for specifying an operator corresponding to operation feature information based on the operation feature information acquired from the work machine and the association table.SELECTED DRAWING: Figure 1

Description

The present invention relates to a work machine management system.

Conventionally, there is known a management system that identifies an operator of a work machine when operating information is acquired from the work machine, and provides operation guidance and status grasp of the work machine.

As a method of identifying the operator of the work machine, for example, a method of receiving identification information for identifying the operator from a terminal possessed by the operator of the work machine, or inputting identification information for identifying the operator into the work machine. The method etc. are known.

Japanese Patent No. 5941123 Japanese Patent No. 52334033

In the above-mentioned conventional technique, when the operator is identified by the identification information received from the terminal, if the terminal is used by a person other than the operator specified by the identification information, the operator is not correctly recognized. Further, when the operator is identified from the identification information input to the work machine, it is difficult to prevent spoofing by a third party.

Therefore, in view of the above circumstances, the purpose is to automatically identify the operator of the work machine.

The work machine management system according to the embodiment of the present invention is a work machine management system that manages the work machine, and the identification information that identifies the operator is associated with the operation feature pattern that indicates the operation feature. It has a storage unit in which the association table is stored, operation feature information acquired from the work machine, and a specific unit that identifies an operator corresponding to the operation feature information based on the association table.

The operator of the work machine can be automatically identified.

It is a figure which shows an example of the system structure of the management system of a work machine. It is a block diagram which shows the structural example of the drive system of a shovel. It is a figure explaining excavation work. It is a figure which shows an example of operation feature information. It is a figure which shows an example of the hardware configuration of a management device. It is a figure explaining the functional structure of the management apparatus. It is a flowchart explaining operation of a management apparatus. It is the first figure which shows the display example of the information including the specific result of an operator. It is a second figure which shows the display example of the information including the specific result of an operator.

Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 is a diagram showing an example of a system configuration of a work machine management system. In the following description, the excavator 100 will be described as an example of a working machine. Further, in the following description, the management system of the work machine may be simply referred to as a management system.

The management system SYS of the present embodiment includes a shovel 100, a management device 200 for managing the shovel 100, and a support device 300 for supporting the management of the shovel 100. The excavator 100 and the management device 200 are connected in a state in which communication is possible via a network or the like. Further, the excavator 100, the management device 200, and the support device 300 are connected to each other in a state in which communication is possible via a network or the like.

In the example of FIG. 1, the management system SYS includes the support device 300, but the present invention is not limited to this. The management system SYS may include the excavator 100 and the management device 200, and may not include the support device 300.

The excavator 100 will be described below. FIG. 1 shows a side view of the excavator 100.

The excavator 100 has a lower traveling body 1, a swivel mechanism 2, and an upper swivel body 3, and the upper swivel body 3 is mounted on the lower traveling body 1 so as to be swivelable via the swivel mechanism 2. A boom 4 is attached to the upper swing body 3. An arm 5 is attached to the tip of the boom 4, and a bucket 6 as an end attachment is attached to the tip of the arm 5.

The boom 4, arm 5, and bucket 6 form an excavation attachment as an example of the attachment. The boom 4 is driven by the boom cylinder 7, the arm 5 is driven by the arm cylinder 8, and the bucket 6 is driven by the bucket cylinder 9. A boom angle sensor S1 is attached to the boom 4, an arm angle sensor S2 is attached to the arm 5, and a bucket angle sensor S3 is attached to the bucket 6.

The boom angle sensor S1 is configured to detect the rotation angle of the boom 4. In the present embodiment, the boom angle sensor S1 is an acceleration sensor, and can detect the rotation angle of the boom 4 with respect to the upper swing body 3 (hereinafter, referred to as “boom angle”). The boom angle becomes the minimum angle when the boom 4 is lowered to the maximum, and increases as the boom 4 is raised.

The arm angle sensor S2 is configured to detect the rotation angle of the arm 5. In the present embodiment, the arm angle sensor S2 is an acceleration sensor and can detect the rotation angle of the arm 5 with respect to the boom 4 (hereinafter, referred to as “arm angle”). The arm angle becomes the minimum angle when the arm 5 is closed most, and increases as the arm 5 is opened.

The bucket angle sensor S3 is configured to detect the rotation angle of the bucket 6. In the present embodiment, the bucket angle sensor S3 is an acceleration sensor and can detect the rotation angle of the bucket 6 with respect to the arm 5 (hereinafter, referred to as “bucket angle”). The bucket angle becomes the minimum angle when the bucket 6 is closed most, and increases as the bucket 6 is opened.

The boom angle sensor S1, the arm angle sensor S2, and the bucket angle sensor S3 each detect a potentiometer using a variable resistor, a stroke sensor that detects the stroke amount of the corresponding hydraulic cylinder, and a rotation angle around the connecting pin. It may be a rotary encoder, a gyro sensor, or a combination of an acceleration sensor and a gyro sensor.

A boom rod pressure sensor S7R and a boom bottom pressure sensor S7B are attached to the boom cylinder 7. An arm rod pressure sensor S8R and an arm bottom pressure sensor S8B are attached to the arm cylinder 8. A bucket rod pressure sensor S9R and a bucket bottom pressure sensor S9B are attached to the bucket cylinder 9.

The boom rod pressure sensor S7R, boom bottom pressure sensor S7B, arm rod pressure sensor S8R, arm bottom pressure sensor S8B, bucket rod pressure sensor S9R and bucket bottom pressure sensor S9B are also collectively referred to as "cylinder pressure sensor".

The boom rod pressure sensor S7R detects the pressure in the rod side oil chamber of the boom cylinder 7 (hereinafter referred to as “boom rod pressure”), and the boom bottom pressure sensor S7B detects the pressure in the bottom side oil chamber of the boom cylinder 7 (hereinafter referred to as “boom rod pressure”). , "Boom bottom pressure") is detected.

The arm rod pressure sensor S8R detects the pressure in the rod side oil chamber of the arm cylinder 8 (hereinafter referred to as “arm rod pressure”), and the arm bottom pressure sensor S8B detects the pressure in the bottom side oil chamber of the arm cylinder 8 (hereinafter referred to as “arm rod pressure”). , "Arm bottom pressure") is detected.

The bucket rod pressure sensor S9R detects the pressure in the rod side oil chamber of the bucket cylinder 9 (hereinafter referred to as "bucket rod pressure"), and the bucket bottom pressure sensor S9B detects the pressure in the bottom side oil chamber of the bucket cylinder 9 (hereinafter referred to as "bucket rod pressure"). , "Bucket bottom pressure") is detected.

The upper swing body 3 is provided with a cabin 10 which is an driver's cab and is equipped with a power source such as an engine 11. Further, the upper swivel body 3 includes a controller 30, a display device 40, an input device 42, an audio output device 43, a storage device 47, a positioning device P1, a machine body tilt sensor S4, a swivel angle speed sensor S5, an image pickup device S6, and a communication device T1. Is installed.

The upper swing body 3 may be equipped with a power storage unit that supplies electric power, an electric generator that generates electric power by using the rotational driving force of the engine 11, and the like. The power storage unit is, for example, a capacitor, a lithium ion battery, or the like. The electric generator may function as an electric motor to drive a mechanical load, or may function as a generator to supply electric power to the electric load.

The controller 30 functions as a main control unit that controls the drive of the excavator 100. In this embodiment, the controller 30 is composed of a computer including a CPU, RAM, ROM, and the like. Various functions of the controller 30 are realized, for example, by the CPU executing a program stored in the ROM.

The various functions are, for example, at least one of a machine guidance function that guides the manual operation of the excavator 100 by the operator (operator) and a machine control function that automatically supports the manual operation of the excavator 100 by the operator. May include.

The display device 40 is configured to display various types of information. The display device 40 may be connected to the controller 30 via a communication network such as CAN, or may be connected to the controller 30 via a dedicated line.

The input device 42 is configured so that the operator can input various information to the controller 30. The input device 42 includes at least one such as a touch panel, a knob switch, and a membrane switch installed in the cabin 10.

The audio output device 43 is configured to output audio. The audio output device 43 may be, for example, an in-vehicle speaker connected to the controller 30, or an alarm device such as a buzzer. In the present embodiment, the voice output device 43 is configured to output various information by voice in response to a voice output command from the controller 30.

The storage device 47 is configured to store various types of information. The storage device 47 is, for example, a non-volatile storage medium such as a semiconductor memory. The storage device 47 may store information output by various devices during the operation of the shovel 100, or may store information acquired through the various devices before the operation of the shovel 100 is started. Further, the storage device 47 may store the operation feature information generated by the function of the controller 30. Details of the operation feature information will be described later.

The storage device 47 may store data regarding the target construction surface acquired via, for example, the communication device T1 or the like. The target construction surface may be set by the operator of the excavator 100, or may be set by the construction manager or the like.

The positioning device P1 is configured to measure the position of the upper swing body 3. The positioning device P1 may be configured to be able to measure the orientation of the upper swing body 3. In the present embodiment, the positioning device P1 is, for example, a GNSS compass, detects the position and orientation of the upper swing body 3, and outputs the detected value to the controller 30. Therefore, the positioning device P1 can also function as a direction detecting device for detecting the direction of the upper swing body 3. The orientation detection device may be an orientation sensor attached to the upper swing body 3.

The body tilt sensor S4 is configured to detect the tilt of the upper swing body 3. In the present embodiment, the body tilt sensor S4 is an acceleration sensor that detects the front-rear tilt angle around the front-rear axis and the left-right tilt angle around the left-right axis of the upper swing body 3 with respect to the virtual horizontal plane. The front-rear axis and the left-right axis of the upper swivel body 3 are orthogonal to each other at, for example, the excavator center point, which is one point on the swivel axis of the shovel 100.

The turning angular velocity sensor S5 is configured to detect the turning angular velocity of the upper swing body 3. The turning angular velocity sensor S5 may be configured to detect or calculate the turning angle of the upper swing body 3. In the present embodiment, the turning angular velocity sensor S5 is a gyro sensor. The turning angular velocity sensor S5 may be a resolver, a rotary encoder, or the like.

The image pickup device S6 is an example of a space recognition device, and is configured to acquire an image of the periphery of the excavator 100. In the present embodiment, the image pickup apparatus S6 includes a front camera S6F that images the space in front of the excavator 100, a left camera S6L that images the space on the left side of the excavator 100, and a right camera S6R that images the space on the right side of the excavator 100. , And a rear camera S6B that images the space behind the excavator 100.

The image pickup device S6 is, for example, a monocular camera having an image pickup element such as a CCD or CMOS, and outputs the captured image to the display device 40. The image pickup device S6 may be a stereo camera, a distance image camera, or the like. Further, the image pickup device S6 may be replaced with another space recognition device such as a three-dimensional distance image sensor, an ultrasonic sensor, a millimeter wave radar, a LIDAR or an infrared sensor, and in combination with another space recognition device and a camera. It may be replaced.

The front camera S6F is mounted, for example, on the ceiling of the cabin 10, that is, inside the cabin 10. However, the front camera 6F may be attached to the outside of the cabin 10, such as the roof of the cabin 10 and the side surface of the boom 4. The left camera S6L is attached to the upper left end of the upper swivel body 3, the right camera S6R is attached to the upper right end of the upper swivel body 3, and the rear camera S6B is attached to the upper surface rear end of the upper swivel body 3. ..

The communication device T1 is configured to control communication with an external device outside the excavator 100. In the present embodiment, the communication device T1 controls communication with an external device via a satellite communication network, a mobile phone communication network, an Internet network, or the like.

The external device may be, for example, a management device 200 such as a server installed in an external facility, or a support device 300 such as a smartphone carried by workers around the excavator 100.

The external device is configured to be able to manage operation information regarding, for example, one or a plurality of excavators 100. The operation information includes, for example, the operating time of the excavator 100, the fuel consumption, and the amount of work.
It is information indicating the operating state of the excavator 100, including information on the work content and at least one of the operators who operated the excavator 100. The amount of work is, for example, the amount of earth and sand excavated, the amount of earth and sand loaded on the loading platform of a dump truck, and the like.

The excavator 100 may be configured to transmit operation information about the excavator 100 to an external device at predetermined time intervals via the communication device T1. With this configuration, a worker or an administrator outside the excavator 100 can visually recognize various information including operation information through a display device such as a monitor connected to the management device 200 or the support device 300.

The external device may be a communication device mounted on a dump truck provided with a load weight measuring device, or may be a communication device connected to a truck for measuring the weight of the dump truck. In this case, the excavator 100 can acquire the weight of the earth and sand loaded on the loading platform of the dump truck based on the information from the dump truck or the truck.

FIG. 2 is a block diagram showing a configuration example of a drive system for a shovel. In FIG. 2, the mechanical power system, the hydraulic oil line, the pilot line, and the electric control system are shown by double lines, solid lines, broken lines, and dotted lines, respectively.

The drive system of the excavator 100 is mainly an engine 11, a regulator 13, a main pump 14, a pilot pump 15, a control valve 17, an operating device 26, a discharge pressure sensor 28, an operating pressure sensor 29, a controller 30, a fuel tank 55, and an engine. Includes a controller unit (ECU 74) and the like.

The engine 11 is a drive source for the excavator 100. In the present embodiment, the engine 11 is, for example, a diesel engine that operates so as to maintain a predetermined rotation speed. Further, the output shaft of the engine 11 is connected to each input shaft of the main pump 14 and the pilot pump 15.

The main pump 14 is configured to supply hydraulic oil to the control valve 17 via a hydraulic oil line. In the present embodiment, the main pump 14 is a swash plate type variable displacement hydraulic pump.

The regulator 13 is configured to control the discharge amount of the main pump 14. In the present embodiment, the regulator 13 controls the discharge amount of the main pump 14 by adjusting the swash plate tilt angle of the main pump 14 in response to a control command from the controller 30. For example, the controller 30 receives the output of the operating pressure sensor 29 or the like, outputs a control command to the regulator 13 as needed, and changes the discharge amount of the main pump 14.

The pilot pump 15 supplies hydraulic oil to various flood control devices including the operating device 26 via the pilot line. In the present embodiment, the pilot pump 15 is a fixed displacement hydraulic pump. However, the pilot pump 15 may be omitted.

In this case, the function carried out by the pilot pump 15 may be realized by the main pump 14. That is, the main pump 14 has a function of supplying hydraulic oil to the operating device 26 and the like after reducing the supply pressure of the hydraulic oil by a throttle or the like, in addition to the function of supplying the hydraulic oil to the control valve 17. May be good.

The control valve 17 is a hydraulic control device that controls the hydraulic system in the excavator 100. In this embodiment, the control valve 17 includes control valves 171 to 176. The control valve 17 can selectively supply the hydraulic oil discharged from the main pump 14 to one or a plurality of hydraulic actuators through the control valves 171 to 176.

The control valves 171 to 176 are configured to control the flow rate of the hydraulic oil flowing from the main pump 14 to the hydraulic actuator and the flow rate of the hydraulic oil flowing from the hydraulic actuator to the hydraulic oil tank.

The hydraulic actuator includes a boom cylinder 7, an arm cylinder 8, a bucket cylinder 9, a left-side traveling hydraulic motor 1L, a right-side traveling hydraulic motor 1R, and a turning hydraulic motor 2A. The swivel hydraulic motor 2A may be a swivel motor generator as an electric actuator. In this case, the turning motor generator may be supplied with electric power from the power storage unit or the motor generator.

The operating device 26 is a device used by the operator to operate the actuator. Actuators include at least one of a hydraulic actuator and an electric actuator. In this embodiment, the operating device 26 supplies the hydraulic oil discharged by the pilot pump 15 to the pilot port of the corresponding control valve in the control valve 17 via the pilot line.

The pressure of the hydraulic oil (pilot pressure) supplied to each of the pilot ports is, in principle, a pressure corresponding to the operation direction and the operation amount of the operation device 26 corresponding to each of the hydraulic actuators. At least one of the operating devices 26 is configured to be able to supply hydraulic oil discharged by the pilot pump 15 to the pilot port of the corresponding control valve in the control valve 17 via the pilot line.

The discharge pressure sensor 28 is configured to detect the discharge pressure of the main pump 14. In the present embodiment, the discharge pressure sensor 28 outputs the detected value to the controller 30.

The operating pressure sensor 29 is configured to detect the operation content of the operator using the operating device 26. In the present embodiment, the operating pressure sensor 29 detects the operating direction and operating amount of the operating device 26 corresponding to each of the actuators in the form of pressure, and outputs the detected value to the controller 30. The operation content of the operation device 26 may be detected by using a sensor other than the operation pressure sensor.

The fuel tank 55 is a container for accommodating fuel. The remaining amount of fuel contained in the fuel tank 55 is detected by the fuel remaining amount sensor 55a. The fuel remaining amount sensor 55a outputs information regarding the remaining amount of fuel to the controller 30.

The ECU 74 is configured to control the engine 11. In the present embodiment, the ECU 74 controls the fuel injection amount, the fuel injection timing, the boost pressure, and the like in the engine 11. Further, the ECU 74 outputs information about the engine 11 to the controller 30.

Next, the functional elements of the controller 30 will be described. The controller 30 includes a work amount calculation unit 35, a display control unit 36, a fuel consumption amount calculation unit 37, and an operation feature information generation unit 38.

The work amount calculation unit 35 of the present embodiment calculates the work amount of the excavator 100. Specifically, the work amount calculation unit 35 calculates the work amount based on the information acquired by the information acquisition device. The information acquired by the information acquisition device is boom angle, arm angle, bucket angle, front-back tilt angle, left-right tilt angle, turning angular velocity, turning angle, boom rod pressure, boom bottom pressure, arm rod pressure, arm bottom pressure, bucket rod. It includes at least one of a pressure, a bucket bottom pressure, an image captured by the imaging device S6, a discharge pressure of the main pump 14, an operating pressure for each of the operating devices 26, and the like.

The information acquisition devices include boom angle sensor S1, arm angle sensor S2, bucket angle sensor S3, body tilt sensor S4, turning angle speed sensor S5, image pickup device S6, boom rod pressure sensor S7R, boom bottom pressure sensor S7B, and arm rod pressure sensor. It includes at least one of S8R, an arm bottom pressure sensor S8B, a bucket rod pressure sensor S9R, a bucket bottom pressure sensor S9B, a discharge pressure sensor 28, an operating pressure sensor 29, and the like.

For example, the work amount calculation unit 35 determines the amount of excavated material such as earth and sand excavated by the excavation attachment based on the distance image regarding the space in front of the excavator 100 captured by the three-dimensional distance image sensor as the image pickup device S6. Calculate as. The three-dimensional distance image sensor is, for example, a three-dimensional laser scanner that measures the terrain with a laser. The 3D distance image sensor may be another space recognition device such as a stereo camera.

Specifically, the work amount calculation unit 35 excavates in one excavation operation based on the distance image captured when the excavation operation starts and the distance image captured when the excavation operation is completed. The volume (estimated value) of the excavated material is calculated as the amount of work. In this way, the terrain before excavation and the terrain after excavation are compared, and the amount of work at one time is calculated based on the change.

In the present embodiment, the work amount calculation unit 35 is configured to be able to determine the type of work content such as embankment operation, loading operation, and excavation operation based on the information acquired by the information acquisition device. The embankment operation is an operation of filling soil at a predetermined position, and the loading operation is an operation of loading earth and sand on a dump truck.

Further, the excavation operation is an operation of taking the excavated material into the bucket 6, for example, it is said that the excavation operation is started when the bucket 6 not containing the excavated material comes into contact with the ground, and the bucket 6 containing the excavated material is separated from the ground. It is said that it was completed when However, the conditions for determining that the excavation operation has started and the conditions for determining that the excavation operation has been completed can be arbitrarily set. The same applies to other work contents such as embankment operation and unloading operation. Details of the operations included in the excavation work will be described later.

Further, the work amount calculation unit 35 determines whether or not the excavation operation has started and whether or not the excavation operation has been completed, based on, for example, the outputs of the operation pressure sensor 29 and the cylinder pressure sensor. The work amount calculation unit 35 may determine whether or not the excavation operation has started and whether or not the excavation operation has been completed, based on the output of the attitude sensor that detects the attitude of the excavation attachment. The attitude sensor includes, for example, a boom angle sensor S1, an arm angle sensor S2, and a bucket angle sensor S3. The posture sensor may be a combination of stroke sensors.

With this configuration, the controller 30 can calculate the integrated value of the volume (estimated value) of the excavated object for each of the one-time or a plurality of excavation operations performed within the predetermined time as the amount of work in the predetermined time.

The display control unit 36 is configured to control the content displayed on the display device 40. In the present embodiment, the display control unit 36 causes the display device 40 to display various types of information based on the information acquired by the information acquisition device.

The fuel consumption calculation unit 37 is configured to calculate the fuel consumption. In the present embodiment, the fuel consumption calculation unit 37 calculates the fuel consumption based on the output of the fuel remaining amount sensor 55a. The fuel consumption calculation unit 37 may calculate the fuel consumption at predetermined time intervals, for example.

The operation feature information generation unit 38 generates operation feature information indicating the operation features of each operator. Specifically, the operation feature information generation unit 38 is, for example, information indicating the distribution of the boom rod pressure, boom bottom pressure, arm rod pressure, arm bottom pressure, bucket rod pressure, and bucket bottom pressure acquired by the information acquisition device. May be used as operation feature information.

Boom rod pressure, boom bottom pressure, arm rod pressure, arm bottom pressure, bucket rod pressure, and bucket bottom pressure are used to calculate the amount of work included in the operation information of the excavator 100, and can be said to be part of the operation information. .. Therefore, it can be said that the operation feature information of the present embodiment is information generated by using a part of the operation information indicating the operation state of the excavator 100.

The operation feature information generation unit 38 of the present embodiment may generate operation feature information for each operation performed by the shovel 100, for example.

The operation feature information generation unit 38 is provided in the controller 30, but is not limited thereto. The operation feature information generation unit 38 may be provided on the management device 200 side.

Hereinafter, as an example of the operation feature information, the operation feature information generated when the excavator 100 performs the excavation work will be described with reference to FIGS. 3 and 4. First, the excavation work of the excavator 100 will be described.

FIG. 3 is a diagram illustrating excavation work. In the excavation work, as shown in FIG. 3A, the upper swivel body 3 is swiveled and the bucket 6 is located above the excavation position, and the arm 5 is opened and the bucket 6 is also opened. The operator lowers the boom 4 and lowers the bucket 6 so that the tip of the bucket 6 reaches the target excavation depth D. Normally, turning and boom lowering are operated by an operator, and the position of the bucket 6 is visually confirmed. Further, it is common that the upper swing body 3 is swiveled and the boom 4 is lowered at the same time. The above operation is referred to as a boom lowering turning operation, and this operation section is referred to as a boom lowering turning operation section.

When the operator determines that the tip of the bucket 6 has reached the target excavation depth D, the operator then moves to the horizontal pulling operation as shown in FIG. 3 (b). In the horizontal pulling operation, the arm 5 is closed until the arm 5 is perpendicular to the ground so that the tip of the bucket 6 moves substantially horizontally. By this horizontal pulling operation, soil of a predetermined depth is excavated and scraped by the bucket 6.

When the horizontal pulling operation is completed, the bucket 6 is then closed until it reaches 90 degrees with respect to the arm 5, as shown in FIG. 3 (c). That is, the bucket 6 is closed until the upper edge of the bucket 6 is horizontal, and the collected soil is stored in the bucket 6. The above operation is referred to as an excavation operation, and this operation section is referred to as an excavation operation section.

When the operator determines that the bucket 6 is closed until it reaches 90 degrees, then, as shown in FIG. 3D, the boom 4 continues until the bottom of the bucket 6 reaches a predetermined height H while the bucket 6 is closed. Raise. Following or at the same time, the bucket 6 is swiveled and moved to a position where the upper swivel body 3 is swiveled and the soil is discharged. The above operation is referred to as a boom-up turning operation, and this operation section is referred to as a boom-up turning operation section.

It should be noted that raising the boom 4 until the bottom of the bucket 6 reaches a predetermined height H is, for example, when discharging soil to the loading platform of a dump truck, the bucket 6 must be lifted higher than the height of the loading platform or the bucket 6 becomes the loading platform. This is because they will collide.

For example, if an unskilled operator is maneuvering, the bucket 6 may turn without being lifted to a predetermined height H. In such a case, the bucket 6 may hit the loading platform of the dump truck.

When the operator determines that the boom raising and turning operation is completed, the operator then opens the arm 5 and the bucket 6 as shown in FIG. 3 (e) to discharge the soil in the bucket 6. This operation is referred to as a dump operation, and this operation section is referred to as a dump operation section. In the dump operation, only the bucket 6 may be opened and the soil may be discharged.

When the operator determines that the dump operation is completed, the operator then turns the upper swivel body 3 to move the bucket 6 directly above the excavation position, as shown in FIG. 3 (f). At this time, at the same time as turning, the boom 4 is lowered to lower the bucket 6 to the excavation start position. This operation is a part of the boom lowering turning operation described with reference to FIG. 3 (a). As shown in FIG. 3A, the operator lowers the bucket 6 from the excavation start position to the target excavation depth D, and again performs the excavation operation shown in FIG. 3B.

As described above, in the excavation work, this cycle is repeated with "boom lowering turning operation", "excavation operation", "boom raising turning operation", "dumping operation", and "boom lowering turning operation" as one cycle.

FIG. 4 is a diagram showing an example of operation feature information. FIG. 4 shows operation feature information when operators A, B, C, and D operate the excavator 100 to perform excavation work.

In the example of FIG. 4, the operation feature information generation unit 38 has the boom rod pressure, boom bottom pressure, arm rod pressure, arm bottom pressure, bucket rod pressure, acquired by the information acquisition device during the excavation work. The average value of each value of the bucket bottom pressure is calculated, and the information showing each average value in the form of a bar graph is used as the operation feature information.

In the present embodiment, the operation feature information is indicated by the average value of each pressure, but the present invention is not limited to this. The operation feature information may be indicated by, for example, the cumulative value of each pressure, the maximum value, or the like.

In FIG. 4, the operation feature information 81 is, for example, the boom rod pressure, the boom bottom pressure, the arm rod pressure, the arm bottom pressure, the bucket rod pressure, and the bucket acquired by the information acquisition device when the operator A performs the excavation work. It is the operation feature information generated by using the value of the bottom pressure. Further, the operation feature information 82 is the values of the boom rod pressure, boom bottom pressure, arm rod pressure, arm bottom pressure, bucket rod pressure, and bucket bottom pressure acquired by the information acquisition device when the operator B performs the excavation work. It is the operation feature information generated by using. The operation feature information 83 uses the values of the boom rod pressure, boom bottom pressure, arm rod pressure, arm bottom pressure, bucket rod pressure, and bucket bottom pressure acquired by the information acquisition device when the operator C performs the excavation work. The operation feature information generated in the above is shown. The operation feature information 84 uses the values of the boom rod pressure, boom bottom pressure, arm rod pressure, arm bottom pressure, bucket rod pressure, and bucket bottom pressure acquired by the information acquisition device when the operator D performs the excavation work. The operation feature information generated in the above is shown.

In the operation feature information 81, the average value of the boom rod pressure is the smallest, and the average value of the boom bottom pressure is the largest. That is, in the operation feature information 81, the difference between the average value of the boom rod pressure and the average value of the boom bottom pressure is the largest. Further, in the operation feature information 81, the next largest value after the average value of the boom bottom pressure is the average value of the arm bottom pressure, and the next largest value is the average value of the bucket bottom pressure.

In the operation feature information 82, the average value of the arm rod pressure is the smallest, and the average value of the boom bottom pressure is the largest. Further, in the operation feature information 82, the difference between the average value of the arm bottom pressure and the average value of the arm rod pressure is the largest. Further, in the operation feature information 82, the next largest value after the average value of the boom bottom pressure is the average value of the arm bottom pressure, and the next largest value is the average value of the boom rod pressure.

As described above, in the operation feature information 81 and the operation feature information 82, the magnitude relation of each value is different, and the distribution of each pressure is different. Therefore, it can be said that the excavation work when the operation feature information 81 is acquired and the excavation work when the operation feature information 82 is acquired are performed by different operators. In other words, it can be said that the operator A and the operator B are different persons.

Further, in the operation feature information 83, as in the operation feature information 82, the average value of the arm rod pressure is the smallest and the average value of the boom bottom pressure is the largest. Further, in the operation feature information 83, the difference between the average value of the arm bottom pressure and the average value of the arm rod pressure is the largest. Further, in the operation feature information 82, the next largest value after the average value of the boom bottom pressure is the average value of the arm bottom pressure, and the next largest value is the average value of the boom rod pressure.

As described above, the distribution of each pressure is similar between the operation feature information 83 and the operation feature information 82. Therefore, it can be said that the operator who was performing the excavation work when the operation feature information 83 was acquired may be the same person as the operator who was performing the excavation work when the operation feature information 82 was acquired. .. In other words, it can be said that the operator A and the operator D may be the same person.

In this way, the excavator 100 of the present embodiment acquires the operation feature information indicating the operation characteristics of the operator who operates the excavator 100, and transmits the operation feature information to the management device 200.

The excavator 100 may generate operation feature information in the work and transmit it to the management device 200 each time the work in which the series of operations is repeated is completed.

Further, the excavator 100 may generate operation feature information at regular time intervals and periodically transmit the operation feature information to the management device 200.

When the management device 200 of the present embodiment receives the operation feature information from the excavator 100, the management device 200 refers to an association table in which the operation feature pattern generated from the operation feature information acquired in the past and the operator's identification information are associated with each other. The operator who was operating the excavator 100 is specified. The details of the mapping table will be described later.

The management device 200 of this embodiment will be described below. FIG. 5 is a diagram showing an example of the hardware configuration of the management device.

The management device 200 of the present embodiment includes an input device 201, an output device 202, a drive device 203, an auxiliary storage device 204, a memory device 205, an arithmetic processing unit 206, and an interface device 207, which are connected to each other by a bus B, respectively. It is a computer.

The input device 201 is a device for inputting various kinds of information, and is realized by, for example, a keyboard or a pointing device. The output device 202 is for outputting various kinds of information, and is realized by, for example, a display or the like. The interface device 207 includes a LAN card and the like, and is used for connecting to a network.

The specific program that identifies the operator is at least a part of various programs that control the management device 200. The specific program is provided, for example, by distributing the storage medium 208, downloading from the network, or the like. The storage medium 208 on which the specific program is recorded can store information such as a storage medium such as a CD-ROM, a flexible disk, a magneto-optical disk, etc., which records information optically, electrically, or magnetically, a ROM, a flash memory, or the like. Various types of storage media such as semiconductor memory for electrically recording can be used.

Further, when the storage medium 208 on which the specific program is recorded is set in the drive device 203, the specific program is installed in the auxiliary storage device 204 from the storage medium 208 via the drive device 203. The specific program downloaded from the network is installed in the auxiliary storage device 204 via the interface device 207.

The auxiliary storage device 204 realizes each storage unit or the like possessed by the management device 200, stores a specific program installed in the management device 200, and stores various necessary files, data, etc. by the management device 200. do. The memory device 205 reads and stores the analysis target identification program from the auxiliary storage device 204 when the management device 200 is started. Then, the arithmetic processing unit 206 realizes various processes as described later according to the specific program stored in the memory device 205.

Next, the function of the management device 200 will be described with reference to FIG. FIG. 6 is a diagram illustrating a functional configuration of the management device.

The management device 200 of the present embodiment includes an input reception unit 210, an operation feature information acquisition unit 220, a pattern generation unit 230, a correspondence table storage unit 240, an operator identification unit 250, a pattern update unit 260, and a display control unit 270.

The input receiving unit 210 receives various inputs to the management device 200. Specifically, the input receiving unit 210 receives an operation by an administrator or the like who manages the excavator 100, and the operation feature information acquisition unit 220 acquires (receives) the operation feature information from the excavator 100. The pattern generation unit 230 generates an operation feature pattern based on the operation feature information acquired by the operation feature information acquisition unit 220. Specifically, the operation feature pattern is an operation pattern for each operator generated by using the operation feature information for each operator acquired and accumulated from the excavator 100.

The operation feature pattern generated by the pattern generation unit 230 is associated with, for example, the operator identification information input by the administrator of the excavator 100, new identification information temporarily input, and the like, and is associated with the association table 241. Stored in.

Specifically, the pattern generation unit 230 aggregates the average values of the boom rod pressure, boom bottom pressure, arm rod pressure, arm bottom pressure, bucket rod pressure, and bucket bottom pressure included in the operation feature information, for example. The information to be shown is generated as an operation feature pattern.

The association table storage unit 240 stores the association table 241 in which the identification information that identifies the operator and the operation feature pattern are associated with each other. In the following description, information in which the operation feature pattern and the identification information that identifies the operator are associated with each other may be referred to as association information. That is, the association table storage unit 240 is an example of a storage unit that stores the association information in which the operator's identification information and the operation feature pattern are associated with each other.

The correspondence table 241 of the present embodiment may be created in advance as a pre-processing of the management device 200.

In the association table 241 the identification information that identifies the operator is, for example, the operator's name, employee number, or the like. Further, the operation feature pattern is information generated by aggregating the operation feature information collected in the past by the pattern generation unit 230.

Specifically, the operation feature pattern aggregates the average values of the boom rod pressure, boom bottom pressure, arm rod pressure, arm bottom pressure, bucket rod pressure, and bucket bottom pressure included in the operation feature information for each operator. , It may be a pattern showing the distribution of each pressure generated by performing statistical processing.

In the management device 200 of the present embodiment, an operation feature pattern is generated in advance using the operation feature information associated with the operator's identification information, and a process of associating the identification information with the operation feature pattern is performed to perform the correspondence table 241. To create.

In the present embodiment, the association information is held as the association table 241 (table format), but the format of the association information does not have to be the table format. The association information may be held in any format as long as it is information in which the identification information that identifies the operator and the operation feature pattern are associated with each other.

The operator identification unit 250 refers to the association table 241 and specifies an operator associated with the operation feature information acquired by the operation feature information acquisition unit 220. That is, the operator identification unit 250 is an example of a specific unit that identifies the operator who was operating the excavator 100 when the operation feature information was acquired by referring to the association information stored in the storage unit.

Specifically, when the operation feature information acquisition unit 220 receives the operation feature information, the operator identification unit 250 compares the operation feature pattern stored in the correspondence table 241 with the operation feature pattern similar to the received operation feature information. Determine if the pattern exists.

Then, the operator identification unit 250, for example, when there is an operation feature pattern in the association table 241 whose similarity with the received operation feature information is equal to or higher than a predetermined threshold value, the operator identification unit 250 identifies the identification information corresponding to the operation feature pattern. To get. The degree of similarity between the operation feature information and the operation feature pattern indicates the degree of similarity of the distribution.

In the present embodiment, the operator specified by the identification information is specified to the operator who was operating the excavator 100 when the operation feature information received by the operation feature information acquisition unit 220 is acquired. The predetermined threshold value may be preset by the administrator of the excavator 100 or the like.

The pattern update unit 260 updates the association table 241. Specifically, when the pattern update unit 260 receives the operation feature information that is not similar to any of the operation feature patterns stored in the correspondence table 241, the pattern update unit 260 handles the operation feature information as a new operation feature pattern. It is stored in the attached table 241.

Further, when the operation feature pattern similar to the received operation feature information exists in the association table 241, the pattern update unit 260 updates (learns) the existing operation feature pattern by using the newly acquired operation feature information. do.

When, for example, the administrator of the excavator 100 inputs a display instruction of the result of specifying the operator, the display control unit 270 causes the output device 202 of the display or the like to display the result of specifying the operator.

Hereinafter, the operation of the management device 200 of the present embodiment will be described with reference to FIG. 7. FIG. 7 is a flowchart illustrating the operation of the management device.

The process of FIG. 7 may be executed when, for example, the administrator of the excavator 100 receives an instruction to display a specific result of the operator who operates the excavator 100. Further, the process of FIG. 7 may be executed, for example, at a time determined every day.

The management device 200 of the present embodiment receives the operation feature information from the excavator 100 by the operation feature information acquisition unit 220 (step S701).

Subsequently, the management device 200 refers to the association table 241 by the operator identification unit 250 (step S702). Specifically, the operator specifying unit 250 collates the operation feature information with the operation feature pattern stored in the association table 241.

Subsequently, the management device 200 determines whether or not the operator has been identified by the operator identification unit 250 (step S703). Specifically, the operator specifying unit 250 determines whether or not the operation feature pattern whose similarity with the operation feature information is equal to or higher than a predetermined threshold value is stored in the association table 241.

If the operator is not specified in step S703, the pattern update unit 260 stores this operation feature information as a new operation feature pattern in the association table 241 (step S704), and proceeds to step S705 described later. At this time, the operator identification unit 250 sets the operator's identification result as "unknown".

The case where the operator is not specified means that there is no operation feature pattern in the correspondence table 241 whose similarity with the operation feature information is equal to or higher than a predetermined threshold value. At this time, the pattern update unit 260 may associate the operation feature pattern with the temporary identification information and store it in the association table 241.

When the operator is specified in step S703, the display control unit 270 causes the output device 202 or the like to display the information including the operator's specific result and the operation information received by the excavator 100 (step S705).

The case where the operator is specified means that the correspondence table 241 has an operation feature pattern in which the degree of similarity with the operation feature information is equal to or more than a predetermined threshold value. The pattern update unit 260 sets the identification information of the operator associated with the corresponding operation feature pattern in the association table 241 as a specific result.

Further, the display control unit 270 may display the result of identifying the operator as a display device other than the output device 202 of the management device 200.

In the present embodiment, for example, when a display instruction of a specific result of an operator who operates the excavator 100 is received in a certain time zone, the operation feature information and the operation information in the time zone specified by the excavator 100 may be acquired. .. Then, the display control unit 270 may generate image data including information in which the identification information of the operator specified based on the operation feature information and the operation information are associated with each other, and display the image data on the output device 202 or the like.

Subsequently, the management device 200 determines whether or not the input receiving unit 210 has accepted the operation of instructing the approval of the displayed contents (step S706). If the corresponding operation is not accepted in step S706, the management device 200 ends the process as it is.

When the corresponding operation is received in step S706, the management device 200 updates the operation feature pattern based on the approved contents by the pattern update unit 260, updates the correspondence table 241 (step S707), and processes the operation. To finish.

Specifically, when the displayed specific result is modified, the pattern update unit 260 generates an operation feature pattern including the modified content and reflects it in the association table 241. Further, when the displayed specific result is approved without being modified, the pattern update unit 260 generates an operation feature pattern including the new operation feature information received in step S701, and responds by generating the operation feature pattern. It is reflected in the attached table 241.

An example of displaying information including a specific result of the operator will be described below with reference to FIGS. 8 and 9. FIG. 8 is a first diagram showing an example of displaying information including a specific result of the operator.

On the screen 41w shown in FIG. 8, the timely transition of the estimated soil amount is displayed as a bar graph, and the actual work amount (estimated soil amount) and the scheduled timely transition are displayed as a line graph. In the line graph, the solid line represents the target value, and the broken line represents the value based on the actual results.

On top of that, the screen 41w displays the work time, the weather of each day, the total work time, the operator, the type of work content, and the rotation speed mode in a table format corresponding to the bar graph and the line graph. That is, the screen 41w can be said to be an example of a management screen in which the operation information of the excavator 100 and the operator who operated the excavator 100 are associated with each work time.

In this table format, the display area 61 displays information based on past achievements, and the display area 62 displays information based on future plans. Further, the display areas 63, 64, 65 and the operation button 66 are displayed on the screen 41w.

Specifically, in the display area 61 of the screen 41w, for example, for the work from 8:00 to 9:00, the weather is "sunny", the total work time is "40 minutes", and the operations acquired at this time. The operator's identification information identified from the feature information was "A", the type of work content was "loading (operation)", the rotation speed mode was "SP", and the amount of work for 40 minutes was W2 [ It shows that it was t].

Further, on the screen 41w, for example, for the work from 11:00 to 12:00, the weather is "sunny", the total work time is "11 minutes", and the operator corresponding to the operation feature information acquired at this time is ". It indicates that "unknown", the type of work content is "loading (operation)", the rotation speed mode is "SP", and the amount of work for 11 minutes is W3 [t].

Here, in the present embodiment, when the operator's identification information is "unknown" in the display area 61, the display mode of this display field may be different from that of other display fields. Specifically, when the operator's identification information is "unknown", this display field is highlighted.

In the example of FIG. 8, since the operator identification information is "unknown" in the display field 61a, the display field 61a is highlighted.

Further, in the display field 62a in the display area 62, for example, a weather forecast based on the weather information acquired by the management device 200 from the external server is displayed. In the display field 62b, the identification information of the operator who is scheduled to perform the work from 14:00 and the work content scheduled to be performed by this operator are displayed.

In the display area 63, a message indicating that the operator has been identified based on the operation feature information for the work performed by the management device 200 by 14:00 and a message prompting the management device 200 to confirm the specific result. Is displayed.

In the display area 64, a machine number for identifying the excavator 100 operated by the operator is displayed. From the display area 64, it can be seen that the management device 200 has identified the operator who operated the excavator 100 based on the operation feature information received from the excavator 100 specified by the machine number displayed in the display area 64.

In the display area 65, for example, the date and time when the operation feature information is received is displayed. In other words, the date and time displayed in the display area 65 may be, for example, the date and time when the management device 200 receives the display instruction on the screen 41w.

The operation button 66 is an operation button for approving the specific result of the operator displayed in the display area 61. In other words, the operation button 66 is an operation button for instructing the determination of the association between the operator's identification information displayed in the display area 61 and the operation information.

In the present embodiment, when the operation button 66 is operated, the association table 241 is updated based on the specific result of the operator displayed in the display area 61.

Specifically, in FIG. 8, when the operation button 66 is operated and the display content is approved, the corresponding operator is "unknown" for the operation feature information acquired between 11:00 and 12:00. Is. Therefore, the pattern update unit 260 may use the operation feature information acquired in this time zone as a new operation feature pattern and store it in the association table 241 in association with the provisional identification information.

Further, in the operation feature information acquired between 8:00 and 11:00, the identification information of the corresponding operator is "A". Therefore, the pattern update unit 260 aggregates the operation feature information acquired in this time zone and the operation feature pattern associated with the identification information "A" in the association table 241, updates the operation feature pattern, and updates the operation feature pattern. It is reflected in the correspondence table 241.

As described above, in the present embodiment, every time the operation feature information is newly acquired from the excavator 100, the operation feature pattern for each operator is updated using the operation feature information.

Therefore, according to the present embodiment, the larger the amount of the operation feature information to be acquired, the closer the operation feature indicated by the operation feature pattern to the operation feature of the actual operator. Further, in the present embodiment, since the operation feature pattern is updated according to the acquisition of the operation feature information, for example, improvement of the operator's operation technique can be reflected in the operation feature pattern.

Therefore, according to the present embodiment, the larger the amount of operation feature information, the more accurate the operator's specific result based on the operation feature pattern can be improved.

FIG. 9 is a second diagram showing an example of displaying information including a specific result of the operator. The screen 41w shown in FIG. 9 shows a state in which the operator's identification information is input to the display field 61a by the administrator of the excavator 100 or the like.

In this embodiment, the input of information to the display area 61 of the screen 41w is accepted in this way. Therefore, in the present embodiment, for example, when the operator's specific result is "unknown" or when the operator's specific result is incorrect, the administrator of the excavator 100 may input information on the screen 41w. can.

When the operation button 66 is operated in the state of the screen 41w shown in FIG. 9, the pattern update unit 260 sets the operation feature information acquired for the work between 8:00 and 12:00 and the correspondence table 241. The identification information "A" and the associated operation feature pattern are totaled, and the operation feature pattern is updated. Then, the pattern update unit 260 updates the correspondence table 241 by associating the updated operation feature pattern with the identification information “A”.

The screen 41w shown in FIGS. 8 and 9 may be displayed on, for example, the display of the support device 300 or the display device 40 of the excavator 100.

Further, in the examples of FIGS. 8 and 9, an example in which the identification information of one operator is displayed for each work time zone is shown, but a plurality of operators are operating the excavator 100 during the same work time zone. In that case, the identification information of a plurality of operators may be displayed. The operator identification information may be the operator's name.

As described above, according to the present embodiment, the operator (operator) who has operated the excavator 100 can be automatically identified based on the operation feature information of the excavator 100. Further, in the present embodiment, the operation information of the excavator 100 in the time zone in which the operation feature information is acquired and the information associated with the specified operator can be displayed on the screen 41w.

Therefore, according to the present embodiment, for example, the operator of the excavator 100 can reduce the trouble of transmitting the identification information to the management device 200 using a terminal or the like in which the identification information of the excavator 100 is stored, and the load on the communication can be reduced. Can be reduced.

Further, in the present embodiment, the operator's erroneous recognition due to the terminal being used by a person other than the operator specified by the identification information does not occur. Further, in the present embodiment, since the management device 200 identifies the operator based on the operation feature information, spoofing by a third party can be suppressed.

In the above-described embodiment, the excavator 100 is used as an example of the excavator, but the excavator is not limited to the excavator. The work machine may be, for example, a crane or the like.

Further, the present embodiment may be used in combination with an identification method in which the excavator 100 receives identification information for identifying the operator from a mobile terminal possessed by the operator. Further, in this embodiment, a camera may be arranged in the cabin 10 and used in combination with an identification method for identifying an operator. As described above, by combining the present embodiment with a plurality of identification methods, the operator can be identified more accurately.

Although the preferred examples of the present invention have been described in detail above, the present invention is not limited to the above-mentioned examples, and various modifications and substitutions are made to the above-mentioned examples without departing from the scope of the present invention. Can be added.

1 Lower traveling body 2 Swivel mechanism 3 Upper swivel body 4 Boom 5 Arm 6 Bucket 10 Cabin 11 Engine 30 Controller 35 Work amount calculation unit 36, 270 Display control unit 37 Fuel consumption calculation unit 38 Operation feature information generation unit 40 Display device 100 Excavator 200 Management device 220 Operation feature information acquisition unit 230 Pattern generation unit 240 Correspondence table storage unit 241 Correspondence table 250 Operator identification unit 260 Pattern update unit

Claims (6)

A work machine management system that manages work machines
A storage unit that stores a correspondence table in which identification information that identifies an operator and an operation feature pattern that indicates an operation feature are associated with each other.
A work machine management system having an operation feature information acquired from the work machine and a specific unit that identifies an operator corresponding to the operation feature information based on the association table. The work machine management system according to claim 1, further comprising an update unit that updates the operation feature pattern in the association table based on the operation feature information acquired from the work machine. The second aspect of the present invention, wherein the display control unit has a display control unit that displays information in which the operator specified by the specific unit and the operation information of the work machine when the operation feature information is acquired are associated with each other. Work machine management system. The work machine management system according to claim 3, wherein the operation feature information is information generated by using a part of the operation information of the work machine. The specific part is
Among the operation feature patterns stored in the association table, the operator specified by the identification information associated with the operation feature pattern whose similarity with the operation feature information is equal to or higher than a predetermined threshold value is defined as the operation feature. The work machine management system according to any one of claims 1 to 4, which specifies the operator corresponding to the information. It has a pattern generation unit that generates an operation feature pattern for each operator by using the operation feature information for each operator acquired and accumulated from the work machine.
The management of the work machine according to any one of claims 1 to 5, wherein the correspondence table in which the operation feature pattern for each operator is associated with the identification information of the operator is stored in the storage unit. system.

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